package top.humbleyuan.test;


import java.util.*;

/**
 * @Author HumbleYuan
 * @Date 2020/2/10 11:01
 * @Des
 */
public class Te1 {
    public static void main(String[] args) {
//        int i = 3;
//        System.out.println(Math.pow(2,(double)i));
//        Map<Object,Object> map = new HashMap<>();

        Queue<Integer> queue = new PriorityQueue<>();

        HashMap<Integer, String> map = new HashMap<>();
        for (int i = 0; i < 100; i++) {
            map.put(i, String.valueOf(i));
            map.remove((i - 1));
        }
        //map.remove(2);
        System.out.println(map.size());
    }


}
